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42 results about "Matrix substance" patented technology
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One-step molding method of titanium silicalite molecular sieve
ActiveCN102614911AImprove function and effectImprove adhesionMolecular sieve catalystsCatalyst activation/preparationMolecular sieveCyclohexanone
The invention relates to a one-step molding method of a titanium silicalite molecular sieve. The method comprises the following steps of crystallizing the titanium silicalite molecular sieve subjected to hydro-thermal synthesis; directly adding a matrix substance, a binder, a peptizing agent and a pore-enlarging agent without separating, washing and calcining; pulping; performing spray forming; and calcining the formed microspheres to remove a template agent to obtain large formed titanium silicalite molecular sieve particles which can be applied to ammoximation of cyclohexanone and epoxidation of olefin.
Owner:XIANGTAN UNIV
Coated positive electrode material of lithium-ion battery and preparation method of positive electrode material
InactiveCN106602021AImprove cycle performanceCoated evenlyCell electrodesSecondary cellsElectrical conductorLithium-ion battery
The invention discloses a coated positive electrode material of a lithium-ion battery. A matrix substance of the positive electrode material is a high-nickel positive electrode active material Li<delta>Ni<x>Co<y>M<z>O<2>; a layer of uniform coating is arranged on the surface of the matrix substrate; and the coating is a metal oxide and / or a lithium-ion conductor compound and accounts for 0.01%-10% of the mass of the matrix substrate. The invention further discloses a preparation method of the coated positive electrode material of the lithium-ion battery. The method comprises the steps of firstly, fully dissolving a soluble metal salt into deionized water to obtain a water solution of the soluble metal salt; adding the matrix substrate to the water solution of the soluble metal salt, mixing to obtain a turbid liquid, carrying out full stirring, filtering and drying and then burning to obtain the coated positive electrode material of the lithium-ion battery. The preparation method of the coated positive electrode material of the lithium-ion battery is suitable for the high-nickel positive electrode material; and in-situ coating is carried out on the surface of the matrix substance to form a uniform coating layer, so that the effects of reducing the pH value and improving the cycle performance of the positive electrode material are achieved.
Owner:HUNAN CHANGYUAN LICO CO LTD
Protein sequencing with MALDI mass spectrometry
ActiveUS8581179B2Small amount of calculationIncrease productionTime-of-flight spectrometersSamples introduction/extractionDesorptionProtein Sequence Determination
In a mass spectrometer, sample ions are produced by using matrix assisted laser desorption with a matrix substance that supports spontaneous, non-ergodic ISD fragmentation and a laser light source with nanosecond light pulses and a multiple spot beam profile. A plurality of individual time-of-flight spectra are recorded from the resulting ions in such a way that amplification of ion signals in the mass spectrometer detector is initially reduced so that only ions with masses near a mass range limit are initially recorded. During the repeated acquisitions of the individual time-of-flight spectra, both the detector amplification and the mass range limit are increased. By these methods, it is possible to evaluate c and z fragment ions in lower mass ranges and to directly read N-terminal sequences from near terminus up to 80 amino acids and beyond, and C-terminal sequences up to more than 60 amino acids.
Owner:BRUKER DALTONIK GMBH & CO KG
Analysis of microbes from microcolonies by maldi mass spectrometry
ActiveUS20130337502A1Low costHigh sensitivityParticle separator tubesMicrobiological testing/measurementDesorptionBiology
The invention relates to the cell disruption of microbes and the preparation of the microbe proteins for mass spectrometric analysis. The cells of microbes from microcolonies are disrupted by physical or chemical means directly on the nutrient medium. The released proteins are then transferred to sample supports by direct contact with their contact surfaces; electrophoresis can be used for assistance. Once the the proteins are firmly adsorbed on the contact surfaces, they can be washed with water in order to remove substances which interfere with the ionization process. For analysis by matrix-assisted laser desorption (MALDI), the proteins are prepared on the contact surfaces of the sample supports with matrix substances to form MALDI samples; the sample supports are then introduced into a MALDI mass spectrometer for the acquisition of the mass spectra. The microbes are identified by similarity comparisons between the mass spectra of the microbe proteins and similarly obtained reference spectra.
Owner:BRUKER DALTONIK GMBH & CO KG
Lighting appliance and process for manufacturing the same
InactiveUS20120120654A1Improve compatibilityImprove shock resistanceNon-electric lightingPoint-like light sourceParticulatesEngineering
The object of the present invention is to provide lighting appliances of various shapes, which use light emitting diodes as a light source, having excellent light directivity, light-diffusing property, durability and shock-proof property.The lighting appliance 1 according to the present invention is constituted by including a light illuminating member 13 formed by sealing off a substrate 8 mounted with light emitting diodes 81 therein with a synthetic resin material 9 prepared by mixing particulates 92 capable of diffusing light irradiated from the light emitting diodes 81 to the matrix substance 91.
Owner:SUZUDEN CORP +1
Carbon dioxide chemical fluorescent sensor material on basis of amidine/guanidine group and preparation detection method thereof
InactiveCN102721681AImprove raw materialsSave raw materialsChemiluminescene/bioluminescenceLuminescent compositionsCompound (substance)Sensor materials
The invention discloses a carbon dioxide chemical fluorescent sensor material on the basis of an amidine / guanidine group and a preparation detection method thereof. The chemical fluorescent sensor material consists of a fluorescent substance and a matrix substance; the matrix substance is formed by a liquid organism or a liquid organic mixture comprising the amidine group and / or the guanidine group and a liquid organism or a liquid organic mixture comprising a hydroxyl group and / or an amidogen group, or the matrix substance is a liquid organism comprising the amidine group and / or the guanidine group and the hydroxyl group and / or the amidogen group; the ratio of amounts of substances of the amidine group and / or the guanidine group to the hydroxyl group and / or the amidogen group in the matrix substance meets 1:10 to 10:1; and the chemical fluorescent sensor material comprises 0.5mg / mL to 4mg / mL of fluorescent substance. The raw materials for preparing the chemical fluorescent sensor material are simple, convenient and cheap; the chemical fluorescent sensor material is environmental-friendly; in the using process of the chemical fluorescent sensor material, other residual energy cannot be consumed; and the chemical fluorescent sensor material has simple and convenient testing process and a visual and visible result.
Owner:BEIHANG UNIV
Two-component polyurethane composition with delayed crosslinking
ActiveCN103314027AHigh climate stabilitySmall mechanical propertiesPolyureas/polyurethane adhesivesSynthetic resin layered productsPolyolAdhesive
The invention relates to a crosslinking two-component polyurethane composition consisting of (i) a constituent A containing polyols and additives, and (ii) a constituent B containing between 100 and 65 wt. % of aromatic polyisocyanates, between 0 and 35 wt. % of aliphatic polyisocyanates, and between 0.05 and 3.0 wt. % of a retarder, and optionally additives, the mixed composition having a viscosity (EN ISO 2555) of between 100 mPas and 3000 mPas at 25 DEG C, and the crosslinked composition having a glass transition temperature (Tg) of higher than 50 DEG C and a pot life of longer than 60 minutes. The two-component polyurethane composition is suitable as an adhesive and as a matrix substance for composite materials.
Owner:HENKEL KGAA
Nano inorganic composite pigment and preparation method thereof
ActiveCN107286705AImprove corrosion resistanceGood dispersionInorganic pigment treatmentSolventInorganic pigments
The invention provides a nano inorganic composite pigment. A nano inorganic pigment is used as a core, and silicon dioxide covers the nano inorganic pigment to form a shell layer, so that the obtained nano inorganic composite pigment is excellent in all properties such as corrosion resistance, dispersivity and compatibility; and furthermore, protection for a matrix substance below a pigment coating is obviously enhanced, and a good basis is provided for subsequent treatment of the pigment coating. The invention further provides a preparation method of the nano inorganic pigment. The preparation process is easy to operate; and no special solvent is used, so that the preparation method is environmentally-friendly and cost-effective, and has a remarkable economical value.
Owner:GREAT WALL MOTOR CO LTD
Method for producing a composite material
ActiveUS20130130583A1Simple materialReduce energy consumptionDielectric heatingElectric discharge heatingDiluentFiber structure
A method includes a step of bringing a plastic matrix substance in contact with a reinforcement fiber structure to form an intermediate material. Further, the method includes a step of curing the matrix substance of the intermediate material to form a composite material. Before the plastic matrix substance is brought into contact with the reinforcement fiber structure, it is mixed with a diluent to form a mixture.
Owner:COREBON PRODION
Sample preparation device for maldi and sample preparation method
ActiveUS20130171349A1Rate of vapor depositionImprove efficiencyLiquid surface applicatorsVacuum evaporation coatingPhysical chemistryMaterials science
To provide a sample preparation device that is appropriate for the formation of a matrix film for MALDI through vacuum vapor deposition. A sample preparation device is provided with: a sample substrate support unit 23 for supporting a substance to be analyzed on a substrate S so that the substance faces a vapor deposition source 21 for a matrix substance J; a light amount measurement unit for irradiating a matrix film vapor deposited on the substrate S with measurement light diagonally and detecting the amount of measurement light that has transmitted through or has been reflected from the above-described matrix film diagonally; and an adhesion prevention means 23a for preventing the matrix substance that has flown off from the above-described vapor deposition source 21 from adhering to the above-described light amount measurement unit.
Owner:SHIMADZU CORP
Analysis of microbes from microcolonies by maldi mass spectrometry
ActiveUS8835176B2Solve the lack of resolutionAvoid mistakesComponent separationSamples introduction/extractionDesorptionBiology
The invention relates to the cell disruption of microbes and the preparation of the microbe proteins for mass spectrometric analysis. The cells of microbes from microcolonies are disrupted by physical or chemical means directly on the nutrient medium. The released proteins are then transferred to sample supports by direct contact with their contact surfaces; electrophoresis can be used for assistance. Once the proteins are firmly adsorbed on the contact surfaces, they can be washed with water in order to remove substances which interfere with the ionization process. For analysis by matrix-assisted laser desorption (MALDI), the proteins are prepared on the contact surfaces of the sample supports with matrix substances to form MALDI samples; the sample supports are then introduced into a MALDI mass spectrometer for the acquisition of mass spectra. The microbes are identified by similarity comparisons between the mass spectra of the microbe proteins and similarly obtained reference spectra.
Owner:BRUKER DALTONIK GMBH & CO KG
Wideband wave absorbing material and application thereof
The invention belongs to the field of preparation of wave absorbing materials, and relates to a wideband wave absorbing material and application thereof, in particular to a wideband wave absorbing material prepared from a porous electric loss substance and application thereof. The invention relates to a wideband wave absorbing material prepared from a porous electric loss substance, which is characterized in that (1) the material is a particle of which the particle size is 10-100 mu m; (2) the electric conductivity of the material is 10<-3>-10<3> S / cm; and (3) the material particle is in a porous structure, and the pore volume is 0.1-1 cm<3> / g, wherein the sizes of 10-30% by volume of the pores are 1-10 mu m, and the sizes of the rest pores are less than 1 mu m. 4-20% by mass of the material can be added to a matrix substance to prepare a wave absorbing coating or wave absorbing composite material, and the wave absorbing coating or wave absorbing composite material can absorb electromagnetic waves within the wide wave band range of 2-20 GHz. The invention solves the problem of narrow bandwidth of the wave absorbing material in the prior art, and overcomes the defect that the prior art can not adapt to wider application range.
Owner:DONGHUA UNIV
Method for preparing temperature-sensitive type facial masks
InactiveCN108578352AHigh water holding rateFine nanoscale three-dimensional network structureCosmetic preparationsToilet preparationsFiberEvaporation
The invention discloses a method for preparing temperature-sensitive type facial masks, and belongs to the field of cosmetics. The method has the advantages that watermelon juice is added in cellulosefermentation production procedures, mainly comprises water and further contains large quantities of carbohydrate, proteins, diversified trace elements and amino acid, citric acid, yeast cream and thelike are further added, accordingly, the growth activity of cellulose production bacteria can be stimulated, and the bacterial cellulose synthesis efficiency can be improved; hyaluronic acid is addedin an in-situ manner to carry out fermentation culture and is an excellent delivery carrier, diversified active components of facial masks can be carried by the hyaluronic acid to be used, the hyaluronic acid covers surface meshes in formed matrix substances, the surfaces of fibers are coated with the hyaluronic acid, the fibers are bonded with one another by the hyaluronic acid, and accordinglythe method is beneficial to preventing waste due to evaporation of essence in the facial masks; the problems of skin irritation due to substances added into existing facial masks, low safety and easiness in evaporation loss of nutritional components can be solved by the aid of the method.
Owner:高昕文
Antibacterial polymer-based waterproof coating and preparation method thereof
InactiveCN112409871AGood film formingUniform growthAntifouling/underwater paintsPaints with biocidesAntibacterial agentCompatibilization
The invention discloses an antibacterial polymer-based waterproof coating and a preparation method thereof. An antibacterial agent material with good biological activity and antibacterial effect is obtained by loading nano-silver and nano-zinc oxide on an in-situ synthesized chitosan hydroxyl calcium phosphate composite material, and then is added into a polymer-based waterproof coating formula toobtain the antibacterial polymer-based waterproof coating. The chitosan hydroxyl calcium phosphate loaded nano-silver and nano-zinc oxide antibacterial agent synthesized in situ is uniform in particle size and good in dispersity, can firmly load nano-particles, cannot fall off from a load body and cannot be agglomerated again, and the chitosan hydroxyl calcium phosphate loaded nano-silver and nano-zinc oxide antibacterial agent synthesized in situ has good compatibility with the polymer so that when the coating is prepared, the antibacterial additive is not separated from a polymer matrix substance, and the performance and the antibacterial effect of the coating are not reduced; meanwhile, the chitosan-modified antibacterial agent has optimized film-forming property when being added intothe coating for use.
Owner:CHENDU NEW KELI CHEM SCI CO LTD
Sample preparation method and sample preparation device for maldi
ActiveUS20160035553A1High detection sensitivitySaves preparation laborSamples introduction/extractionPretreated surfacesGas phaseSolvent
After a sample such as a biomedical tissue section is attached to an electrically-conductive slide glass (S1), the film layer of a matrix substance is appropriately formed by vapor deposition so as to cover the sample (S2). The crystal of the matrix substance in the film layer is very fine and uniform. Subsequently, the slide glass on which the matrix film layer is formed is placed in a vaporized solvent atmosphere, and the solvent infiltrates into the matrix film layer (S3). When the solvent sufficiently infiltrated is vaporized, a substance to be measured in the sample takes in the matrix and re-crystallized. Furthermore, the matrix film layer is formed again on the surface by the vapor deposition (S4). The added matrix film layer absorbs excessive energy of a laser beam during MALDI, which suppresses the denaturation of the substance to be measured and the like, so that high detection sensitivity can be achieved while high spatial resolution is maintained.
Owner:SHIMADZU CORP
Immunosuppressant monitoring by maldi mass spectrometry
InactiveUS20120074308A1Wide linear responseImprove accuracyBiological material analysisIsotope separationEverolimusMacrolide resistance
The invention relates to therapeutic drug monitoring (TDM) by mass spectrometry, particularly to the monitoring of immunosuppressant levels in blood of patients with transplanted organs. A liquid phase extraction procedure reproducibly extracts the therapeutic drug molecules from whole blood and mass spectrometric analysis on MALDI instruments, with a matrix substance for highest sensitivity and special sample deposition procedure for a reproducible ionization of the therapeutic drug molecules. Suitable internal standard substances added to the blood in exact amounts ensure a correct absolute quantification. The method is particularly suitable for immunosuppressants belonging to the class of macrocyclic lactones (sirolimus, tacrolimus, everolimus) and cyclic polypeptides (cyclosporin A), and even works as a multiplex method for all four immunosuppressants simultaneously.
Owner:BRUKER DALTONIK GMBH
Acid anhydride and epoxy high-molecular chain extension tackifier, and preparation method and application thereof
The invention discloses an acid anhydride and epoxy high-molecular chain extension tackifier, and a preparation method and application thereof. The chain extension tackifier is prepared from, by mass, 65 to 90 parts of a matrix substance, 5 to 35 parts of a glycidyl auxiliary agent, 5 to 35 parts of an anhydride auxiliary agent, 0.1 to 1 part of an antioxidant and 0.1 to 1 part of a heat stabilizer. The matrix substance in the invention is a polyhydric alcohol substance, and a multi-component composite system is prepared by utilizing the reaction activity of a glycidyl auxiliary agent, anhydride and an alcoholic hydroxyl group. The composite system can replace anhydride or epoxy polymer chain extenders to be applied to the field of biodegradable plastic processing, so that the processability is improved, and the defects that the existing biodegradable composite material is high in cost and does not have a special processing aid are overcome. Meanwhile, due to the fact that the glycidyl auxiliaries and the anhydride auxiliaries are various, the auxiliaries with corresponding molecular structures can be designed according to different biodegradable materials, and the application range is wide.
Owner:GUANGDONG ACAD OF SCI INST OF BIOENGINEERING
Device and method for mechanically cleaning inner wall of barrel-shaped container
InactiveCN104646375AAchieve mechanical cleaningEliminate distractionsHollow article cleaningLocking mechanismBarrel Shaped
Owner:俞少平
Filter disc directed at XRF element determination and preparation method thereof, determination box, and element determination method
InactiveCN105527308AAnalytical results are reliableMaterial analysis using wave/particle radiationPreparing sample for investigationEngineeringTest matrix
The invention provides a filter disc directed at XRF element determination and a preparation method thereof, a determination box, and an element determination method, belonging to the field of element determination. The preparation method for the filter disc comprises the following steps: respectively putting standard liquids of a plurality of elements with to-be-determined concentrations onto carriers and carrying out drying so as to obtain original filter discs; and preparing final filter discs with sizes matching with to-be-determined substances from the original filter discs, wherein standard liquids of one or more to-be-determined elements are put on the carriers. According to the invention, samples of any matrix material can be rapidly and accurately tested; one defect, i.e., the defect that to-be-tested matrixes like plastic and soil have to be used after calibration of standard substances like plastic and soil of corresponding matrixes with apparatuses, of an X-ray fluorescence spectrometer is overcome; standard matrix substance calibration apparatuses are not needed; and the advantages of direct determination, low cost, convenience and rapidness are obtained.
Owner:NAT INST OF METROLOGY CHINA
Method for quickly and quantitatively screening captan residue in fruit through high-performance thin-layer chromatography coupled with photobacterium phosphoreum biosensing
InactiveCN109884239AQuick screeningAchieving High-Throughput Screening RequirementsComponent separationMicrobiological testing/measurementChromatographic separationHazardous substance
The invention discloses a method for quickly and quantitatively screening captan residue in fruit through high-performance thin-layer chromatography coupled with photobacterium phosphoreum biosensing,and belongs to the technical field of the food detection. The method comprises the following steps: firstly performing sample preparation and sample cleaning on fruit homogenate through solid-liquidextraction, and then developing an extract through high-performance thin-layer chromatography, enabling the target captan to separate from a sample interference matrix substance in extraction liquid,and then coupling a chromatographic separation result with the photobacterium phosphoreum biosensing through a dipping manner; and quantitatively assessing the target captan residue concentration in the fruit by combining the bioluminescence autography with digital image analysis. The invention establishes a method for quickly and quantitatively screening captan residue in fruit through high-performance thin-layer chromatography coupled with photobacterium phosphoreum biosensing, the method has the advantages of being quick, accurate and economic; and meanwhile, the method example for quicklyand reliably screening harmful substance residue with invisible spectrum characteristic in the food is provided based on the establishment of the high-performance thin-layer chromatography and bioluminescence autography coupled detection method.
Owner:JIANGNAN UNIV
Surface coating of lead ingot cold granulator
InactiveCN107936804AImprove film forming speedImprove film qualityAnti-corrosive paintsPolyurea/polyurethane coatingsWater basedSilicon dioxide
The invention discloses a surface coating of a lead ingot cold granulator, and relates to the technical field of a lead acid battery production device. The surface coating comprises a water-based polyurethane emulsion, coupling-agent-modified nanometer silica, benzene sulfonic acid, pentaerythritol, poly(1,4-benzenedimethanol), molybdenum dialkyldithiocarbamate, acidified starch, sodium-alginate-modified attapulgite, and water. According to a large number of experiments, components of the coating are matched at a reasonable ratio, and the whole use performance of the coating is improved. The coating takes a water-based polyurethane emulsion as a main matrix substance, and poly(1,4-benzenedimethanol) and molybdenum dialkyldithiocarbamate are added to modify the water-based polyurethane emulsion at a certain degree. The branched chain structure of the molecule is loosened, so that the film-forming speed and quality of the coating are effectively improved. A coupling agent is used to modify silica, so that the problem that common silica is prone to aggregate and poor in compatibility and dispersibility is solved.
Owner:蚌埠市华鼎机械科技有限公司
Sample preparation device to form a matrix film for matrix assisted laser desorption/ionization method
ActiveUS9334569B2Rate of vapor depositionImprove efficiencyLiquid surface applicatorsVacuum evaporation coatingGas phaseMatrix-assisted laser desorption/ionization
To provide a sample preparation device that is appropriate for the formation of a matrix film for MALDI through vacuum vapor deposition. A sample preparation device is provided with: a sample substrate support unit 23 for supporting a substance to be analyzed on a substrate S so that the substance faces a vapor deposition source 21 for a matrix substance J; a light amount measurement unit for irradiating a matrix film vapor deposited on the substrate S with measurement light diagonally and detecting the amount of measurement light that has transmitted through or has been reflected from the above-described matrix film diagonally; and an adhesion prevention means 23a for preventing the matrix substance that has flown off from the above-described vapor deposition source 21 from adhering to the above-described light amount measurement unit.
Owner:SHIMADZU CORP
Compound photocatalyst for treating wastewater pollution as well as preparation method and application of compound photocatalyst
ActiveCN104549395AWell mixedGrind fullyPhysical/chemical process catalystsWater/sewage treatment by irradiationOrganic dyeWastewater
The invention discloses a compound photocatalyst for treating wastewater pollution as well as a preparation method and application of the compound photocatalyst for treating the wastewater pollution. According to the preparation method, a matrix substance CdLa2S4of the compound photocatalyst is compounded once by virtue of a hydrothermal method and is prepared into the compound photocatalyst with a regular shape by virtue of a calcining method. The compound photocatalyst can be utilized for catalytically degrading organic dyes under ultraviolet irradiation, and particularly the efficiency for catalytically degrading azo organic dyes is high.
Owner:安徽金森源环保工程有限公司
Environmental response type glucosyl nanoparticle and processing method thereof
ActiveCN110950970AExcellent pH stimulus response effectImproves antigen bioavailabilityPowder deliveryPharmaceutical non-active ingredientsEnvironmental engineeringNanoparti cles
The invention discloses an environmental response type glucosyl nanoparticle and a processing method thereof, and belongs to the technical field of starch-based material processing. The environmentalresponse type nanoparticle is prepared from a glucosyl nanoparticle through a novel enzyme surface thinning-charge positioning modification composite modification technology. The method has the characteristics of simple and controllable process, greenness, environmental protection, continuous production and the like, and the prepared product can be used in the fields of foods, medicines, chemicalindustry and the like as a matrix substance.
Owner:JIANGNAN UNIV
Composite photocatalyst for photocatalytic water splitting for hydrogen generation and preparation method and application of composite photocatalyst
ActiveCN104549396AWell mixedGrind fullyPhysical/chemical process catalystsWater/sewage treatment by irradiationPhotocatalytic water splittingHydrogen
The invention discloses a composite photocatalyst SiC / CdLa2S4 and a preparation method and application of the composite photocatalyst SiC / CdLa2S4. A hydrothermal method is adopted for synthesizing a composite photocatalyst matrix substance CdLa2S4 by one step, and the composite photocatalyst with the regular morphology is prepared by adopting a burning method. The composite photocatalyst can catalytically degrade organic dyes under UV irradiation, has high efficiency on degrading ozo organic dyestuffs particularly, and also can decompose water to generate a clean energy substance-hydrogen under the UV irradiation.
Owner:安徽杰清环保科技有限公司
High-barrier PVA-based composite film and preparation method thereof
The invention provides a high-barrier PVA-based composite film, which comprises the following components (by weight): 20-30 parts of corn starch, 40-50 parts of PVA, 10-20 parts of modified hydrotalcite, 30-50 parts of a keratin solution, 10-20 parts of sodium carboxymethylcellulose, 5-15 parts of polyethylene glycol, 3-10 parts of a cross-linking agent, 3-10 parts of a plasticizer, and 100-150 parts of water. Since the modified hydrotalcite layer has a high degree of encapsulation of molecular chains of matrixes, the polyvinyl alcohol molecular chain is difficult to diffuse into the water, thus achieving the effect of fixing the matrix. And since the cross-linking effect between various matrix substances also blocks the diffusion of water molecules, the mechanical properties of the composite material are maintained at a high level.
Owner:王晚秀
Process for producing luminant excitable with vacuum ultraviolet radiation, luminant excitable with vacuum ultraviolet radiation and luminous element including the same
InactiveUS20060091806A1Reduce thermal degradationImprove thermal stabilityDischarge tube luminescnet screensGas discharge electrodesLuminous intensityFluorescence
A plasma display panel having its thermal degradation and VUV deterioration reduced through enhancement of the crystallinity of luminant excitable with vacuum ultraviolet radiation to thereby attain an enhancement of luminous efficiency; and a process for producing the same. The plasma display panel comprises a pair of opposite arranged substrates and, interposed therebetween, a phosphor layer that is excited with vacuum ultraviolet radiation to thereby emit light, the phosphor layer containing spherical fine particles of a luminant excitable with vacuum ultraviolet radiation. The luminant is composed only of a matrix substance and an activator and is highly pure without having any impurity phase. Accordingly, the phosphor layer can be formed while maintaining the luminance of luminant excitable with vacuum ultraviolet radiation, so that the luminescence intensity of phosphor layer can be enhanced. Thus, there can be provided a plasma display of high luminance.
Owner:NAT INST OF ADVANCED IND SCI & TECH +1
Carbon dioxide chemical fluorescent sensor material on basis of amidine/guanidine group and preparation detection method thereof
InactiveCN102721681BImprove raw materialsSave raw materialsChemiluminescene/bioluminescenceLuminescent compositionsCompound (substance)Sensor materials
The invention discloses a carbon dioxide chemical fluorescent sensor material on the basis of an amidine / guanidine group and a preparation detection method thereof. The chemical fluorescent sensor material consists of a fluorescent substance and a matrix substance; the matrix substance is formed by a liquid organism or a liquid organic mixture comprising the amidine group and / or the guanidine group and a liquid organism or a liquid organic mixture comprising a hydroxyl group and / or an amidogen group, or the matrix substance is a liquid organism comprising the amidine group and / or the guanidine group and the hydroxyl group and / or the amidogen group; the ratio of amounts of substances of the amidine group and / or the guanidine group to the hydroxyl group and / or the amidogen group in the matrix substance meets 1:10 to 10:1; and the chemical fluorescent sensor material comprises 0.5mg / mL to 4mg / mL of fluorescent substance. The raw materials for preparing the chemical fluorescent sensor material are simple, convenient and cheap; the chemical fluorescent sensor material is environmental-friendly; in the using process of the chemical fluorescent sensor material, other residual energy cannot be consumed; and the chemical fluorescent sensor material has simple and convenient testing process and a visual and visible result.
Owner:BEIHANG UNIV
Sample pretreatment device
PendingCN112485076AUnblockLittle flow changeParticle separator tubesPreparing sample for investigationPhysical chemistryAnalytical chemistry
The present invention provides a sample pretreatment device capable of accurately and efficiently removing nozzle clogging caused by precipitation of crystals of a matrix material. Provided is a sample pretreatment device configured to apply, to the surface of a sample, a solution in which a predetermined substance is dissolved or dispersed. In order to properly and efficiently unclog a nozzle dueto the deposition of the crystal of a matrix substance, the device includes a spray unit (3) including a solution tube (32) for the solution to pass through, a gas tube (33) for a spray gas to pass through, and a nozzle part (30) configured to spray the solution arriving at the terminal end of the solution tube by ejection of the spray gas through the gas tube, as well as a cleaning liquid supplier (4, 41) configured to put a cleaning liquid on an opening of the nozzle part from outside the spray unit.
Owner:SHIMADZU SEISAKUSHO CO LTD
Degradable food packaging bag and preparation method thereof
PendingCN111320849AHigh elongation at breakHigh impact strengthFlexible coversWrappersPolyesterPolymer science
The invention discloses a degradable food packaging bag which is prepared from the following raw materials in parts by weight: 60-70 parts of modified PBAT, 3-4 parts of reinforcing filler and 0.8-1 part of plasticizer. The invention further discloses a preparation method of the packaging bag. The preparation method comprises the steps that S1, a vacuum drying box is used; S2, extruding and granulating are performed; and S3, the plastic particles are made into packaging films through a film blowing machine, and the packaging films are slit and bagged. According to the packaging bag, the modified PBAT is used as a matrix substance of the packaging bag material, the advantages of PLA and PBAT are integrated, the interfacial compatibility of PLA and PBAT can be improved under the action of the modifier, and the hydrolysis resistance of polyester is improved; by adding the reinforcing filler, the compactness and the mechanical property of the packaging film are improved; the adopted raw materials belong to biodegradable materials, so that the obtained packaging bag is degradable, meets the environmental protection requirement, has high mechanical property and barrier property, and is high in practicability.
Owner:ANHUI SONGTAI PACKAGING MATERIALS
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